Trolley mechanism.



No. 761,565. f PATBNTED MAY a1, y1904.

` J. H. WALKER.

. TROLLEY MEGHANISM.

. APPLIOATION FILED JULY 29, 190e.

:No MODEL. 2 SHEETS-SHEET 1.

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No. 761,565. PATENTED MAY 31, 1904.

J. WALKER l TROLLEY MEGHANISM.

APPLICATION lFILED .JULY 29, 1903.

No MODEL. 2 SHEETS-SHEET 2.

Arron/vf rsf Patented May 31, 1904.

'i UNITED STATES PATENT ,OEEICE. 1,

` TROLLEY MECHANISM.

' ,SPECIFICATION forming part 'of Letters Patent No. 761,565, dated May 31,' 1904:.k

Application filed J uly 29, 1903. Serial No. 167,465. I (No model.)

Tol LZZ whom it Wawy concer-7b.

Be itknown that I, J oHN H. WALKER, a citi- Zen of 'the' United States, residing at `Lexington, in the county of Fayette and State of Kentucky, have made certain new and useful Improvements in Trolley Mechanism, of which the following is a specification. -My invention is an improvement in trolley mechanism, and particularly in the means for securing a practically perfect conductor connection between the conductor-wire carried by the trolley and the cable leading from the trolley-base to the motor; and the invention consists in'v certain novel constructions and combinations of parts, as will be hereinafter described'and claimed.

In .the drawings, Figure l is a side elevation, partly in section, of the base of a trolley` embodying my invention. Fig. 2 is a detail longitudinal section showing the joint between the upper end of the flexible connection and the wire within the trolley-pole. Fig. 3 is a cross-section on about line 3 3 of Fig. l. Fig. 4; is la sectional elevation of the baseplate. Fig. 5 is a detail side view, partly broken away, showing the bearing-pin` and the upright trolley-sleeve which turns th ereon.V

Fig. 6 is a detail perspective 'view of the turn' table conductor-plate; Fig; '7 is a detail perspectiveview of the base conductor-plate. Fig. 8 is a detail perspective view of one of the terminals or wire pieces for the flexible connection. Fig. 9 is a detail perspective view, partly broken away; of the base-plate; and

Fig. -10 shows a somewhat different construction from that shown in Fig. l.

By the present invention I seek to provide a 'practically perfect conducting connection between the wire conductor in the trolleypole and the cable which extends to"` the m01.

tor, and in doing this I provide'afleXible copper connection A, connected at .one end'with the copperiwire B in the pole C and having lits other end connected electrically, by means of copper connections, with the cable D,which leads to the motor, vand may therefore be called `the motor-cable. The advantages of this will :be readily understood by those skilled in the art, as it enables the passage of practically all the current in the freest man= ner from the wire conductor B to the motor, avoiding the intervention of any steel or other conductors of low conductivity, which will necessarily 'reduce the feed kof the current, and by permitting a free passage of the entire current supplied to the motor I amable to' increase speed and power.

In carrying out my invention I may employ an ordinary trolleypole carried in substantially the ordinary manner on 'a base-plate E,

mounted on the car, the upper surface of the ing G', which receives a depending pin or lug` I on the base conductor-plate I, which latter may be ofcopper, with its pin or projection I also of copper and integral with the plate I, as shown in Fig. 7, or said pin I may be a separate pinas indicated, for instance, in dot-Y ted lines' at I in Fig. 1. When the base conductor-plate is applied, as shown in Figs. l and4, with itspin or projection I abutted by the cable D and the said cable is pressed by the screws d tightly against the pin I', a direct and close connection4 is made-between the cable D and the copper pin I to provide for the free passage of current from the plate I to the said cable D. This plate I is provided at one end with a ring I2, concentric with the sleeve C of the trolley and resting upon the base-plate E and forming a base upon which turns the ring J of the turn-tableconductorplate J, which latter is keyed by a pin or projection j, fitting in a socket j" in the sleeve C', to the said sleeve C', so it turns therewith,- as will be understood from Figs. 1, 5, and 6 of the drawings. This plate J has a-projecting shank J 2, which inclines slightly upward and is tightly bolted to the shank L at J 3 between the two clamp-plates J4, as shown in drawings, holding the flat surfaces of shanks closely together, keeping out sleet or frost from between the two surfaces, alsosame from corroding, &c. By this means the connection A and plate J can be readily connected and disconnected, as desired. The terminal L is provided with the socket LA2 to receive one end of the flexible cable connection A and is split at L3, so the rivet L4, passing through the openings L5 in the jaws L, formed by the split or slot L3, can be drawn tightly together upon the end of the fiexible connection A, the latter being preferably also soldered within the socket L2 in order to securek a better conducting connection. terminals L, of which I employ one at each end of the fieXible copper connection A, are also preferably of copper. It will be noticed that l thus form a copper connection between the connection A 'and the motor-cable and that by arranging the turn-table conductorplate J to turn upon the base conductor-plate I the surface between said parts will always be kept clean and polished by the movement thereof, thus improving the conduction between the said parts. The upper end of. the flexible connection A is connected with the wire B by means of a terminal L, similar to that employed for securing the lower end of the connection A with the plate J, the shank of the upper terminal L being riveted at b to the flattened end of the wire B and being also preferably soldered to the fiattened end in order to improve the connection.

By the described construction it will be noticed I secure a positive copper connection from the wire B to the motor-cable, thus avoiding any loss of current, and consequently of speed and power or any other loss, such as may resultfrom an imperfect conduction of the eurrent from the wire B to the motor-cable.

The construction shown in Figs. 1, 6, and 7 may be preferred on short cars, where it is usual to carry the trolley-pole around the end of the car, and where, therefore, the cable A would sometimes become twisted if connected at its lower end directly with the non-revolving base E; but on any cars in which the trolleypole can never be taken around the end of the car, and thus reversed from side to side, I may employ the construction shown in Fig. 10, in which the base conductor-plate I and the turntable conductor-plate J are dispensed with, and the lower end of the cableA has connected directly with it a pin or projection A to enter the vertical opening H in the base Einstead of providing the pin or projection I on the base conductor-plate. Manifestly this construction shown in Figl() is within the broad principle of my invention, and while Iprefer to employ the plates I and J it will be understood that I do not desire to be limited in the broad features of my invention thereto.

Having thus described my invention, what These I claim as new, and desire to secure by Letters Patent, .is-

l. The combination substantially as herein described,of the base having a horizontal opening for the motor-cable, the motor-cable in said opening, and the screws clamping themetor-cable in said opening, said base-plate being also provided with a vertical opening intersecting the horizontal opening for themetor-cable at a point between the clampingscrews for said cable, the base conductor-plate having a pin or projection fitting in the vertical opening in the base, and in contact with the motor-cable, said base conductor-plate having a ring concentric with the pivot of the trolley-pole, the trolley-pole, its bearingsleeve, the turn-table conductor-plate having a ring fitting on the ring of the base conductorplate, and keyed to the sleeve of the trolleypole and having a projecting shank, the conductor-wire in the trolley-pole, the fiexible copper connection, and the terminals at the opposite ends of said connection, said terminals having shanks secured respectively to the copper conductor of the trolley-pole and the shank of the turn-table conductor-plate, and having split sockets to receive the ends of the flexible connection, and means for clamping said sockets upon the connection, allsubstantially as and for the purposes set forth.

2. The combination with the motor-cable, and the trolley-pole conductor, of the flexible connection having one end connected with the trolley pole conductor, the turn table conductor-plate connected with the other end of the flexible connection,and the base conductorplate bearing at one end in connection with the turn-table conductor-plate and having electrical connection at its other end with the motor-cable, substantially as set forth.

3. In a trolley mechanism, the combination of the motor-cable. the trolleypole and its conductor, a base conductor-plate, connections between the same and the motor-cable, the turn-table conductor-plate bearing against the base conductor-plate, and connections bctween the turn-table conductor-plate and the 4trolley-conductor, substantially as set forth.

4. In a trolley mechanism, the combination of the motor -eable, the trolley`- pole and its conductor, the base having a transverse opening for the motor-cable, and an intersecting opening at an angle thereto and intersecting the opening for the motor-cable, and a conductor having a pin or projection fitting in the intersecting opening and in contact with the motor-cable in the transverse opening, and connections between said pin or projection and the conductor of the trolley-pole, substantially as set forth.

5. In a trolley mechanism, the combination i of the motor-cable, the base having a transverse opening to receive the motor-cable, and clamping-screws for said cable and also provided with an intersecting opening intersect- IOO ITO

ing the opening for the motor-cable at a point between the clamping screws, and a conductor pin .or projection in said .intersecting jopenig and in contact With the motor-cable,

substantially as set forth. l

6. The combination in a trolley mechanism,

with the motorrcable, and the trolley-pole and its condnctor, of the base having al transverse opening receiving the motor-cable, and an intersecting opening intersecting said transverse opening, the iiexible copper connection connected at one end with the trolleyl pole conductor and a conductor pin or projecvbase-plate having a transverse opening for the motor-cable, and an intersecting opening intersecting said transverse opening, the base conductor-plate having a ring forming a bearing-for the turn-table conductor-plate, and a shank vprovided With a pin or projection entering the intersecting opening of the baseplate and connecting With the motor-cable, the ltrolley-pole and its conductor, and the turn-table conductor-plate bearing against the ring of the base conductor-plate, and connections between said turn-table conductor-plate and the' trolley-pole conductor, substantially as set forth.

8. The combination of the base conductorplate having a projecting arm for connection with the motor-conductor, the turn-table conductor-plate, overlying the base conductor# plate and having aprojecting arm for connection with the trolley-pole conductor substantially as set forth.

9. .The combination of the base conductorplate, the trolley-pole sleeve, the turn-table conductorplate keyed to the trolley-pole sleeve, and having a projecting arm for connection with the trolley-pole conductor, and means for electrical connection of the motor- 'conductor with the base conductor-plate, substantially as set forth.

JOHN H. WALKER.

Witnesses:

SoLoN C. KEMON, PERRY B. TURPIN. 

